The main culprit of cigarette harm is not tar content, and "low tar" cigarettes and "light flavor cigarettes" with longer filters and smaller cigarette diameters can not reduce tobacco harm. Low tar does not mean low harm.

After cigarettes are fitted with filters, the smoking resistance is greatly increased, and the toxic substances produced are also increased. Carbon monoxide and benzopyrene are produced by incomplete combustion of organic matter contained in tobacco. When smoking, the greater the resistance, the more incomplete combustion and the more production. When smoking "low tar" cigarettes, the intake of carbon monoxide increases by about 40%, and carbon monoxide is an important risk factor for cardiovascular and cerebrovascular diseases.

The burning of low tar cigarettes produces nitrosamines, which are specific carcinogens that induce adenocarcinoma. Smoking "low-tar" cigarettes and light-flavor cigarettes will often make smokers smoke deeper, increase the residence time of harmful substances in the lungs and increase the incidence of lung cancer.

Extended data

In order to make up for the lack of nicotine intake and maintain the nicotine concentration in the blood, smokers usually take a "compensatory behavior": they will smoke deeper and more; With the increase of smoking frequency and quantity, other harmful substances in inhaled tobacco will also increase, and the total intake of tar has not decreased.

After the tar content decreased, the original aroma of tobacco leaves was affected. In order to keep smokers, the tobacco industry will add various spices, additives or Chinese herbal medicines to cigarettes, but so far, there is no evidence that these additives are legal and safe.

People's Network-Low tar cigarettes equal low harm?